String theory in which the fundamental ingredient of our universe is assumed to be one-dimensional strings, instead of particles, tries to merge the gravitational theory and quantum mechanics. An extension of this idea is to consider a cloud of strings [1]}-[2]} and study its possible
measurable effects on long range gravitational fields of some
sources, shuch as black holes. Letelier [1]} has tried to extend the idea of a string to a black hole, possibly to reveal some properties of the blac khole. Ghosh and et al. obtained a generalization for third-order Lovelock gravity [4]}, and Herscovich and et al. [5]} obtained the solution for Einstein-Gauss-Bonnet theory in the Letelier spacetime.
